diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/.vscode/settings.json b/Code/Steiner/CO2-Daten-Projekt-V2/.vscode/settings.json
new file mode 100644
index 0000000..e112a70
--- /dev/null
+++ b/Code/Steiner/CO2-Daten-Projekt-V2/.vscode/settings.json
@@ -0,0 +1,7 @@
+{
+    "java.project.sourcePaths": ["src"],
+    "java.project.outputPath": "bin",
+    "java.project.referencedLibraries": [
+        "lib/**/*.jar"
+    ]
+}
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/README.md b/Code/Steiner/CO2-Daten-Projekt-V2/README.md
new file mode 100644
index 0000000..7c03a53
--- /dev/null
+++ b/Code/Steiner/CO2-Daten-Projekt-V2/README.md
@@ -0,0 +1,18 @@
+## Getting Started
+
+Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code.
+
+## Folder Structure
+
+The workspace contains two folders by default, where:
+
+- `src`: the folder to maintain sources
+- `lib`: the folder to maintain dependencies
+
+Meanwhile, the compiled output files will be generated in the `bin` folder by default.
+
+> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there.
+
+## Dependency Management
+
+The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies).
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/bin/App.class b/Code/Steiner/CO2-Daten-Projekt-V2/bin/App.class
new file mode 100644
index 0000000..52e0619
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diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/bin/Co2Data.class b/Code/Steiner/CO2-Daten-Projekt-V2/bin/Co2Data.class
new file mode 100644
index 0000000..428ebcc
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diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/bin/Date.class b/Code/Steiner/CO2-Daten-Projekt-V2/bin/Date.class
new file mode 100644
index 0000000..407dda6
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diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/bin/FillTable.class b/Code/Steiner/CO2-Daten-Projekt-V2/bin/FillTable.class
new file mode 100644
index 0000000..bbcabff
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diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/bin/Lesson.class b/Code/Steiner/CO2-Daten-Projekt-V2/bin/Lesson.class
new file mode 100644
index 0000000..83e9051
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diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/bin/Points.class b/Code/Steiner/CO2-Daten-Projekt-V2/bin/Points.class
new file mode 100644
index 0000000..3b15870
Binary files /dev/null and b/Code/Steiner/CO2-Daten-Projekt-V2/bin/Points.class differ
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/bin/Teacher.class b/Code/Steiner/CO2-Daten-Projekt-V2/bin/Teacher.class
new file mode 100644
index 0000000..f42ed1f
Binary files /dev/null and b/Code/Steiner/CO2-Daten-Projekt-V2/bin/Teacher.class differ
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/src/App.java b/Code/Steiner/CO2-Daten-Projekt-V2/src/App.java
new file mode 100644
index 0000000..8a24371
--- /dev/null
+++ b/Code/Steiner/CO2-Daten-Projekt-V2/src/App.java
@@ -0,0 +1,112 @@
+import java.util.Arrays;
+import java.util.Scanner;
+
+public class App {
+    private static final Scanner scanner = new Scanner(System.in);
+
+    private static final int ROOM_COUNT = 3;
+    private static final int DAY_COUNT = 5;
+    private static final int LESSON_COUNT = 12;
+
+    public static final Lesson[][][] timeTable = new Lesson[ROOM_COUNT][DAY_COUNT][LESSON_COUNT];
+    private static final Teacher[] teachers = new Teacher[Teacher.nameMap.size()];
+
+    private static void initializeTeachers() {
+        int index = 0;
+        for (String initial : Teacher.nameMap.keySet()) {
+            teachers[index++] = new Teacher(initial);
+        }
+    }
+
+    private static void fillInTimeTable() {
+        FillTable.fill37TimeTable();
+        FillTable.fill38TimeTable();
+        FillTable.fill39TimeTable();
+    }
+
+    private static void calculatePoints() {
+        // Point calculation logic
+    }
+
+    private static void sortTeachers() {
+        Arrays.sort(teachers,
+                (a, b) -> Integer.compare(b.getPoints().getTotalPoints(), a.getPoints().getTotalPoints()));
+    }
+
+    private static void printTeachers() {
+        int rank = 1;
+        int previousPoints = -1;
+        int currentRank = 1;
+
+        for (int i = 0; i < teachers.length; i++) {
+            Teacher teacher = teachers[i];
+            int teacherPoints = teacher.getPoints().getTotalPoints();
+
+            if (teacherPoints == previousPoints) {
+                System.out.println(currentRank + ". " + teacher.getName() + " " + teacherPoints);
+            } else {
+                if (i > 0) {
+                    rank += (i - (currentRank - 1));
+                }
+                currentRank = rank;
+                System.out.println(rank + ". " + teacher.getName() + " " + teacherPoints);
+            }
+
+            previousPoints = teacherPoints;
+        }
+    }
+
+    private static int getUserInput(String textOutput) {
+        System.out.println(textOutput);
+        while (true) {
+            if (scanner.hasNextInt()) {
+                return scanner.nextInt();
+            } else {
+                System.out.println("Invalid input. Please enter a number.");
+                scanner.next();
+            }
+        }
+    }
+
+    private static void printExplanation() {
+        System.out.println("Point calculation explanation:");
+        System.out.println("1. Up to 5 points for keeping the window open during a small break.");
+        System.out.println("2. Up to 10 points for long breaks, depending on window usage.");
+        System.out.println("3. 5 bonus points for teacher switches in the room.");
+    }
+
+    private static void printShutDown() {
+        System.out.println("Shutting down...");
+        for (int i = 3; i > 0; i--) {
+            System.out.print(i + "...");
+            try {
+                Thread.sleep(1000);
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+            }
+        }
+        System.out.println("Goodbye!");
+    }
+
+    public static void main(String[] args) {
+        fillInTimeTable();
+        initializeTeachers();
+        calculatePoints();
+        sortTeachers();
+        printTeachers();
+
+        int userInput = getUserInput(
+                "Do you want to see how the points were calculated? (Yes 1, No 0; anything is an error)");
+
+        if (userInput == 1) {
+            printExplanation();
+            printShutDown();
+        } else if (userInput == 0) {
+            printShutDown();
+        } else {
+            System.out.println("Invalid input. Please enter 1 for Yes or 0 for No.");
+        }
+
+        scanner.close();
+    }
+}
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/src/Co2Data.java b/Code/Steiner/CO2-Daten-Projekt-V2/src/Co2Data.java
new file mode 100644
index 0000000..33c649f
--- /dev/null
+++ b/Code/Steiner/CO2-Daten-Projekt-V2/src/Co2Data.java
@@ -0,0 +1,98 @@
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Co2Data {
+    private Date date;
+    private int co2Level;
+
+    public Co2Data(Date date, int co2Level) {
+        this.date = date;
+        this.co2Level = co2Level;
+    }
+
+    public Date getDate() {
+        return date;
+    }
+
+    public void setDate(Date date) {
+        this.date = date;
+    }
+
+    public int getCo2Level() {
+        return co2Level;
+    }
+
+    public void setCo2Level(int co2Level) {
+        this.co2Level = co2Level;
+    }
+
+    public static List<Co2Data> getData(String csvURL, int classRoomNumber) {
+        List<Co2Data> dataList = new ArrayList<>();
+
+        try {
+            URL url = new URL(csvURL);
+            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+            conn.setRequestMethod("GET");
+            conn.setRequestProperty("Accept", "application/csv");
+            if (conn.getResponseCode() != 200) {
+                throw new RuntimeException("Failed : HTTP Error code : "
+                        + conn.getResponseCode());
+            }
+
+            InputStreamReader in = new InputStreamReader(conn.getInputStream());
+            BufferedReader br = new BufferedReader(in);
+            String output;
+
+            // Skip header line
+            br.readLine();
+
+            while ((output = br.readLine()) != null) {
+                Co2Data data = parseData(output, classRoomNumber);
+                if (data != null) {
+                    dataList.add(data);
+                }
+            }
+            conn.disconnect();
+
+        } catch (Exception e) {
+            System.out.println("Exception in NetClientGet: " + e);
+        }
+
+        return dataList; // Return the list of Co2Data objects
+    }
+
+    private static Co2Data parseData(String csvLine, int classRoomNumber) {
+        String[] fields = csvLine.split(",");
+        if (fields.length < 5) {
+            return null; // Handle error or log it if needed
+        }
+
+        try {
+            // Extract date and time from created_at field
+            String createdAt = fields[0];
+            String[] dateTime = createdAt.split(" ");
+            String[] dateParts = dateTime[0].split("-");
+            String[] timeParts = dateTime[1].split(":");
+
+            // Create a Date object
+            int year = Integer.parseInt(dateParts[0]);
+            int month = Integer.parseInt(dateParts[1]);
+            int day = Integer.parseInt(dateParts[2]);
+            int hour = Integer.parseInt(timeParts[0]);
+            int minute = Integer.parseInt(timeParts[1]);
+            Date date = new Date(day, month, year, hour, minute);
+
+            // Parse CO2 level (field1)
+            int co2Level = Integer.parseInt(fields[2]);
+
+            return new Co2Data(date, co2Level);
+        } catch (Exception e) {
+            System.out.println("Error parsing data: " + e);
+            return null;
+        }
+    }
+}
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/src/Date.java b/Code/Steiner/CO2-Daten-Projekt-V2/src/Date.java
new file mode 100644
index 0000000..12377bb
--- /dev/null
+++ b/Code/Steiner/CO2-Daten-Projekt-V2/src/Date.java
@@ -0,0 +1,41 @@
+public class Date {
+    private int day;
+    private int month;
+    private int year;
+    private int hour;
+    private int minute;
+
+    public Date(int day, int month, int year, int hour, int minute) {
+        this.day = day;
+        this.month = month;
+        this.year = year;
+        this.hour = hour;
+        this.minute = minute;
+    }
+
+    // Getters
+    public int getDay() {
+        return day;
+    }
+
+    public int getMonth() {
+        return month;
+    }
+
+    public int getYear() {
+        return year;
+    }
+
+    public int getHour() {
+        return hour;
+    }
+
+    public int getMinute() {
+        return minute;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("%04d-%02d-%02d %02d:%02d", year, month, day, hour, minute);
+    }
+}
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/src/FillTable.java b/Code/Steiner/CO2-Daten-Projekt-V2/src/FillTable.java
new file mode 100644
index 0000000..adf9696
--- /dev/null
+++ b/Code/Steiner/CO2-Daten-Projekt-V2/src/FillTable.java
@@ -0,0 +1,81 @@
+
+public class FillTable {
+    private static final String[] START_TIMES = {
+            "7:45", "8:35", "9:40", "10:30", "11:20", "12:10", "12:50",
+            "13:35", "14:25", "15:15", "16:15", "17:05"
+    };
+
+    private static final String[] END_TIMES = {
+            "8:30", "9:20", "10:25", "11:15", "12:05", "12:50", "13:30",
+            "14:20", "15:10", "16:10", "17:00", "17:50"
+    };
+
+    private static void fillTable(String[] teacherShortNames, String day, String[] startTime, String[] endTime,
+            int roomIndex) {
+        int dayIndex = getDayIndex(day);
+        for (int i = 0; i < teacherShortNames.length && i < startTime.length && i < endTime.length; i++) {
+            Teacher teacher = new Teacher(teacherShortNames[i]); // Initialize Teacher with shortform
+            App.timeTable[roomIndex][dayIndex][i] = new Lesson(roomIndex, teacher.getName(), startTime[i], endTime[i],
+                    day);
+        }
+    }
+
+    private static int getDayIndex(String day) {
+        switch (day) {
+            case "Monday":
+                return 0;
+            case "Tuesday":
+                return 1;
+            case "Wednesday":
+                return 2;
+            case "Thursday":
+                return 3;
+            case "Friday":
+                return 4;
+            default:
+                return -1;
+        }
+    }
+
+    static void fill37TimeTable() {
+        int roomIndex = 0;
+        fillTable(new String[] { "Hm", "Hm", "Hi", "Hm", "Hm", "Lunch", "Bd", "Gi", "Gi", "Ts", "Ts", "" },
+                "Monday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Ts", "Ts", "Ts", "Ts", "Le", "Lunch", "Lunch", "Fh", "Fh", "Fh", "Fh", "" },
+                "Tuesday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Lu", "Lu", "Lu", "Lu", "Cg", "Cg", "Lunch", "Se", "Se", "Se", "Se", "" },
+                "Wednesday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Gi", "Gi", "Ba", "Ba", "Ba", "Lunch", "Bd", "Du", "Lz", "Lz" },
+                "Thursday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Kp", "KP", "Or", "Vt", "Vt", "Lunch", "Lunch", "Du", "Du", "Du", "", "" },
+                "Friday", START_TIMES, END_TIMES, roomIndex);
+    }
+
+    static void fill38TimeTable() {
+        int roomIndex = 1;
+        fillTable(new String[] { "Bz", "Bz", "Bz", "Bz", "Bz", "Lunch", "Lunch", "Hn", "Hn", "Bu", "Hn", "Hn" },
+                "Monday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Kg", "Kg", "Eh", "Re", "Re", "Lunch", "Lunch", "Bt", "Kh", "Kh", "", "" },
+                "Tuesday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Cg", "Cg", "Cg", "Cg", "Es", "Lunch", "Lunch", "Cg", "Cg", "", "", "" },
+                "Wednesday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Do", "Do", "Gr", "Gr", "Or", "Lunch", "Lunch", "Bu", "Bu", "Zu", "", "" },
+                "Thursday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "", "Hu", "Ge", "Eh", "Eh", "Bu", "Lunch", "Eh", "Eh", "", "", "" },
+                "Friday", START_TIMES, END_TIMES, roomIndex);
+    }
+
+    static void fill39TimeTable() {
+        int roomIndex = 2;
+        fillTable(new String[] { "Bd", "Bd", "Bd", "Bd", "Bd", "Lunch", "Lunch", "Lu", "Lu", "Lu", "Lu", "" },
+                "Monday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Do", "Do", "Zu", "Zu", "Zu", "Lunch", "Lunch", "Se", "Se", "Se", "Se", "" },
+                "Tuesday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Cg", "Cg", "Cg", "Cg", "Bu", "Lunch", "Lunch", "Gi", "Gi", "Gi", "Gi", "" },
+                "Wednesday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Bd", "Bd", "Bd", "Bd", "Or", "Lunch", "Lunch", "Le", "Le", "Le", "", "" },
+                "Thursday", START_TIMES, END_TIMES, roomIndex);
+        fillTable(new String[] { "Gi", "Gi", "Gr", "Gr", "Gi", "Lunch", "Lunch", "Hi", "Hi", "Hi", "", "" },
+                "Friday", START_TIMES, END_TIMES, roomIndex);
+    }
+}
\ No newline at end of file
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/src/Lesson.java b/Code/Steiner/CO2-Daten-Projekt-V2/src/Lesson.java
new file mode 100644
index 0000000..fd4d6bc
--- /dev/null
+++ b/Code/Steiner/CO2-Daten-Projekt-V2/src/Lesson.java
@@ -0,0 +1,37 @@
+public class Lesson {
+    private int roomNumberNumber;
+    private String teacherInitials;
+    private String startTime;
+    private String endTime;
+    private String weekweekDay;
+
+    // Constructor to initialize all fields
+    public Lesson(int roomNumber, String teacherInitials, String startTime, String endTime, String weekweekDay) {
+        this.roomNumberNumber = roomNumber;
+        this.teacherInitials = teacherInitials;
+        this.startTime = startTime;
+        this.endTime = endTime;
+        this.weekweekDay = weekweekDay;
+    }
+
+    // Getters
+    public int getroomNumber() {
+        return roomNumberNumber;
+    }
+
+    public String getteacherInitials() {
+        return teacherInitials;
+    }
+
+    public String getStartTime() {
+        return startTime;
+    }
+
+    public String getEndTime() {
+        return endTime;
+    }
+
+    public String getweekDay() {
+        return weekweekDay;
+    }
+}
\ No newline at end of file
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/src/Points.java b/Code/Steiner/CO2-Daten-Projekt-V2/src/Points.java
new file mode 100644
index 0000000..490549d
--- /dev/null
+++ b/Code/Steiner/CO2-Daten-Projekt-V2/src/Points.java
@@ -0,0 +1,35 @@
+// Points class for managing point categories
+public class Points {
+    private int fiveMinuteBreak;
+    private int longerBreak;
+    private int bonusPoints;
+
+    public int getFiveMinuteBreak() {
+        return fiveMinuteBreak;
+    }
+
+    public void setFiveMinuteBreak(int fiveMinuteBreak) {
+        this.fiveMinuteBreak = fiveMinuteBreak;
+    }
+
+    public int getLongerBreak() {
+        return longerBreak;
+    }
+
+    public void setLongerBreak(int longerBreak) {
+        this.longerBreak = longerBreak;
+    }
+
+    public int getBonusPoints() {
+        return bonusPoints;
+    }
+
+    public void setBonusPoints(int bonusPoints) {
+        this.bonusPoints = bonusPoints;
+    }
+
+    // Method to calculate total points
+    public int getTotalPoints() {
+        return fiveMinuteBreak + longerBreak + bonusPoints;
+    }
+}
\ No newline at end of file
diff --git a/Code/Steiner/CO2-Daten-Projekt-V2/src/Teacher.java b/Code/Steiner/CO2-Daten-Projekt-V2/src/Teacher.java
new file mode 100644
index 0000000..6802f61
--- /dev/null
+++ b/Code/Steiner/CO2-Daten-Projekt-V2/src/Teacher.java
@@ -0,0 +1,44 @@
+import java.util.HashMap;
+import java.util.Map;
+
+public class Teacher {
+    private String name;
+    private Points points;
+
+    public static final Map<String, String> nameMap = new HashMap<>();
+    static {
+        nameMap.put("Hm", "Hummel");
+        nameMap.put("Bd", "Bender");
+        nameMap.put("Bu", "Burger");
+        nameMap.put("Cg", "Chung");
+        nameMap.put("Do", "Doe");
+        nameMap.put("Eh", "Ehrlich");
+        nameMap.put("Fh", "Fischer");
+        nameMap.put("Gi", "Giordano");
+        nameMap.put("Gr", "Graham");
+        nameMap.put("Hi", "Higgins");
+        nameMap.put("Kg", "Kang");
+        nameMap.put("Kh", "Khan");
+        nameMap.put("Lz", "Lozano");
+        nameMap.put("Lu", "Lund");
+        nameMap.put("Or", "Ortega");
+        nameMap.put("Re", "Reyes");
+        nameMap.put("Se", "Seng");
+        nameMap.put("Ts", "Tanaka");
+        nameMap.put("Vt", "Vetter");
+        nameMap.put("Zu", "Zuniga");
+    }
+
+    public Teacher(String name) {
+        this.name = nameMap.getOrDefault(name, "Unknown");
+        this.points = new Points();
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Points getPoints() {
+        return points;
+    }
+}
diff --git a/Code/Steiner/arrayList/.vscode/settings.json b/Code/Steiner/arrayList/.vscode/settings.json
new file mode 100644
index 0000000..e112a70
--- /dev/null
+++ b/Code/Steiner/arrayList/.vscode/settings.json
@@ -0,0 +1,7 @@
+{
+    "java.project.sourcePaths": ["src"],
+    "java.project.outputPath": "bin",
+    "java.project.referencedLibraries": [
+        "lib/**/*.jar"
+    ]
+}
diff --git a/Code/Steiner/arrayList/README.md b/Code/Steiner/arrayList/README.md
new file mode 100644
index 0000000..7c03a53
--- /dev/null
+++ b/Code/Steiner/arrayList/README.md
@@ -0,0 +1,18 @@
+## Getting Started
+
+Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code.
+
+## Folder Structure
+
+The workspace contains two folders by default, where:
+
+- `src`: the folder to maintain sources
+- `lib`: the folder to maintain dependencies
+
+Meanwhile, the compiled output files will be generated in the `bin` folder by default.
+
+> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there.
+
+## Dependency Management
+
+The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies).
diff --git a/Code/Steiner/arrayList/bin/App.class b/Code/Steiner/arrayList/bin/App.class
new file mode 100644
index 0000000..5fe6494
Binary files /dev/null and b/Code/Steiner/arrayList/bin/App.class differ
diff --git a/Code/Steiner/arrayList/src/App.class b/Code/Steiner/arrayList/src/App.class
new file mode 100644
index 0000000..5ae6d78
Binary files /dev/null and b/Code/Steiner/arrayList/src/App.class differ
diff --git a/Code/Steiner/arrayList/src/App.java b/Code/Steiner/arrayList/src/App.java
new file mode 100644
index 0000000..3a5a17c
--- /dev/null
+++ b/Code/Steiner/arrayList/src/App.java
@@ -0,0 +1,71 @@
+import java.util.ArrayList;
+import java.util.Collections;
+
+public class App {
+    public static void main(String[] args) {
+        int[] array = { 0, 1, 2, 3, 4, 5, 4, -3, -2, 0 };
+        ArrayList<Integer> list = new ArrayList<>();
+
+        initializeListFromArray(array, list);
+        printList("ArrayList vor Modifikationen:", list);
+
+        addValues(list, 10, -5);
+        removeElementAt(list, 1);
+        printList("ArrayList nach Modifikationen:", list);
+
+        sortList(list);
+        printList("ArrayList nach Sortierung:", list);
+
+        shuffleList(list);
+        printList("ArrayList nach dem Mischen:", list);
+
+        printMinMaxValues(list);
+    }
+
+    // Initialisiert die ArrayList mit Werten aus dem Array
+    private static void initializeListFromArray(int[] array, ArrayList<Integer> list) {
+        for (int num : array) {
+            list.add(num);
+        }
+    }
+
+    // Fügt der ArrayList zwei Werte hinzu
+    private static void addValues(ArrayList<Integer> list, int value1, int value2) {
+        list.add(value1);
+        list.add(value2);
+    }
+
+    // Entfernt das Element an einer bestimmten Position
+    private static void removeElementAt(ArrayList<Integer> list, int index) {
+        if (index >= 0 && index < list.size()) {
+            list.remove(index);
+        }
+    }
+
+    // Gibt den Inhalt der ArrayList aus
+    private static void printList(String message, ArrayList<Integer> list) {
+        System.out.println(message);
+        for (int num : list) {
+            System.out.print(num + " ");
+        }
+        System.out.println();
+    }
+
+    // Sortiert die ArrayList
+    private static void sortList(ArrayList<Integer> list) {
+        Collections.sort(list);
+    }
+
+    // Mischt die ArrayList
+    private static void shuffleList(ArrayList<Integer> list) {
+        Collections.shuffle(list);
+    }
+
+    // Gibt den maximalen und minimalen Wert der ArrayList aus
+    private static void printMinMaxValues(ArrayList<Integer> list) {
+        int max = Collections.max(list);
+        int min = Collections.min(list);
+        System.out.println("Maximaler Wert: " + max);
+        System.out.println("Minimaler Wert: " + min);
+    }
+}
diff --git a/Code/Steiner/repetition-classes-oop/.vscode/settings.json b/Code/Steiner/repetition-classes-oop/.vscode/settings.json
new file mode 100644
index 0000000..e112a70
--- /dev/null
+++ b/Code/Steiner/repetition-classes-oop/.vscode/settings.json
@@ -0,0 +1,7 @@
+{
+    "java.project.sourcePaths": ["src"],
+    "java.project.outputPath": "bin",
+    "java.project.referencedLibraries": [
+        "lib/**/*.jar"
+    ]
+}
diff --git a/Code/Steiner/repetition-classes-oop/README.md b/Code/Steiner/repetition-classes-oop/README.md
new file mode 100644
index 0000000..7c03a53
--- /dev/null
+++ b/Code/Steiner/repetition-classes-oop/README.md
@@ -0,0 +1,18 @@
+## Getting Started
+
+Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code.
+
+## Folder Structure
+
+The workspace contains two folders by default, where:
+
+- `src`: the folder to maintain sources
+- `lib`: the folder to maintain dependencies
+
+Meanwhile, the compiled output files will be generated in the `bin` folder by default.
+
+> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there.
+
+## Dependency Management
+
+The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies).
diff --git a/Code/Steiner/repetition-classes-oop/bin/App.class b/Code/Steiner/repetition-classes-oop/bin/App.class
new file mode 100644
index 0000000..2184291
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diff --git a/Code/Steiner/repetition-classes-oop/bin/Teacher.class b/Code/Steiner/repetition-classes-oop/bin/Teacher.class
new file mode 100644
index 0000000..8fb4a05
Binary files /dev/null and b/Code/Steiner/repetition-classes-oop/bin/Teacher.class differ
diff --git a/Code/Steiner/repetition-classes-oop/src/App.class b/Code/Steiner/repetition-classes-oop/src/App.class
new file mode 100644
index 0000000..15d66cb
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diff --git a/Code/Steiner/repetition-classes-oop/src/App.java b/Code/Steiner/repetition-classes-oop/src/App.java
new file mode 100644
index 0000000..98dc525
--- /dev/null
+++ b/Code/Steiner/repetition-classes-oop/src/App.java
@@ -0,0 +1,28 @@
+
+// Main application class where we create a Teacher object and display some
+// info.
+public class App {
+    public static void main(String[] args) throws Exception {
+        // Sample data for creating a Teacher object.
+        String firstname = "Karl";
+        String lastname = "Marx";
+        int compensation = 1000000;
+        String[] subjects = { "Economics", "Math", "German" };
+
+        // Creating a Teacher object using the data above.
+        Teacher teacher = new Teacher(firstname, lastname, compensation, subjects);
+
+        // Printing the teacher's full name.
+        System.out.println("Teacher: " + teacher.getFirstname() + " " + teacher.getLastname());
+
+        // Printing the teacher's compensation.
+        System.out.println("Compensation: " + teacher.getCompensation());
+
+        // Printing the subjects the teacher teaches.
+        System.out.print("Subjects: ");
+        // Loop through each subject in the array and print it.
+        for (String subject : teacher.getSubjects()) {
+            System.out.print(subject + " ");
+        }
+    }
+}
diff --git a/Code/Steiner/repetition-classes-oop/src/Teacher.class b/Code/Steiner/repetition-classes-oop/src/Teacher.class
new file mode 100644
index 0000000..37c06ba
Binary files /dev/null and b/Code/Steiner/repetition-classes-oop/src/Teacher.class differ
diff --git a/Code/Steiner/repetition-classes-oop/src/Teacher.java b/Code/Steiner/repetition-classes-oop/src/Teacher.java
new file mode 100644
index 0000000..4a0af07
--- /dev/null
+++ b/Code/Steiner/repetition-classes-oop/src/Teacher.java
@@ -0,0 +1,61 @@
+// The Teacher class represents a teacher with a first name, last name, compensation, and subjects they teach.
+public class Teacher {
+    // Private fields to store the teacher's first name, last name, compensation,
+    // and subjects.
+    private String firstname;
+    private String lastname;
+    private int compensation;
+    private String[] subjects;
+
+    // Constructor for initializing a Teacher object with provided details.
+    public Teacher(String firstname, String lastname, int compensation, String[] subjects) {
+        // Assigning the provided first name to the teacher's firstname field.
+        this.firstname = firstname;
+        // Assigning the provided last name to the teacher's lastname field.
+        this.lastname = lastname;
+        // Assigning the provided compensation to the teacher's compensation field.
+        this.compensation = compensation;
+        // Assigning the provided array of subjects to the teacher's subjects field.
+        this.subjects = subjects;
+    }
+
+    // Getter method for getting the teacher's first name.
+    public String getFirstname() {
+        return firstname;
+    }
+
+    // Setter method for setting a new first name for the teacher.
+    public void setFirstname(String firstname) {
+        this.firstname = firstname;
+    }
+
+    // Getter method for getting the teacher's last name.
+    public String getLastname() {
+        return lastname;
+    }
+
+    // Setter method for setting a new last name for the teacher.
+    public void setLastname(String lastname) {
+        this.lastname = lastname;
+    }
+
+    // Getter method for getting the teacher's compensation.
+    public int getCompensation() {
+        return compensation;
+    }
+
+    // Setter method for setting a new compensation for the teacher.
+    public void setCompensation(int compensation) {
+        this.compensation = compensation;
+    }
+
+    // Getter method for getting the array of subjects the teacher teaches.
+    public String[] getSubjects() {
+        return subjects;
+    }
+
+    // Setter method for setting a new array of subjects for the teacher.
+    public void setSubjects(String[] subjects) {
+        this.subjects = subjects;
+    }
+}
\ No newline at end of file